Answer:
What dress does everyone have, but no one wears?
I can be long or short. I can be grown or bought. I can be painted or left bare. My tip can be round or square. (one word)
Lighter than what I am made of. More of me is hidden than seen. What am I?
I have to be broken before I can be used
My seas have no water, my mountains have no rock, and my land has no grass. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.